Sonova

sonova.com

Industry
Medtech
Headquarters
Stäfa, Zurich
Type
listed
Employees (approx.)
18,000
Checked on
19 October 2026
70/100Grade B

Protection against forged senders: protected

Points per criterion

  • MX 10 / 10
  • SPF 15 / 15
  • DKIM 20 / 20
  • DMARC 25 / 25
  • DNSSEC 0 / 10
  • Transport (MTA-STS/DANE) 0 / 15
  • TLS-RPT 0 / 5

Findings

  • !SPF close to the 10-lookup limit (9)

    One more sending service can break the limit. Flattening or subdomains for third parties create headroom.

  • !DNSSEC not enabled

    Without DNSSEC, DNS answers can be forged in transit. DANE requires DNSSEC.

  • !No MTA-STS

    Without MTA-STS (or DANE) inbound encryption is not enforced; an attacker on the path can downgrade to plain text.

  • !No TLS reporting (TLS-RPT)

    Without TLS-RPT the organisation does not learn when senders fail to deliver encrypted.

Check live in the Mail DNS Check →

Who runs the mail?

Mailbox provider
Microsoft 365
Provider jurisdiction
USA · MX: US
Detection confidence
100 / 100
Microsoft tenant
Managed · Sonova
Tenant region
EU
Signals (7)
MXMicrosoft 365sonova-com.mail.protection.outlook.com
SPFMicrosoft 365include:spf.protection.outlook.com
DKIMMicrosoft 365selector1 → selector1-sonova-com._domainkey.sonova.onmicrosoft.com
AutodiscoverMicrosoft 365autodiscover.outlook.com
NetworkMicrosoft 365AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
Domain verificationGoogle Workspacegoogle-site-verification=EC1VafQKjphG71h
Entra IDMicrosoft 365Entra-ID-Tenant (Managed)

MX servers

PrefHostIPNetworkCountryTLSA
0 sonova-com.mail.protection.outlook.com 52.101.68.12 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US –
52.101.68.10 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US
52.101.73.123 AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation US

SPF

v=spf1 include:sonova.net include:spf.3uu.de include:spf.qb-feedback.com ip4:155.56.221.13 ip4:155.56.221.14 ip4:5.102.145.30 ip4:92.42.235.0/24 ip6:2a06:c01:1:1102::30 ip4:5.102.151.229 ip6:2a06:c00::56fd ip4:80.178.161.0/25 ip4:80.179.142.0/28 ip4:80.179.230.0/24 ip4:212.199.163.192/26 ip4:168.245.30.203 ip4:185.53.204.135 ip4:185.53.204.136 include:spf.mandrillapp.com include:_spf.tivian.com include:spfhost.messageprovider.com -all
all
-all
DNS lookups
9 / 10
Includes
sonova.netspf.3uu.despf.qb-feedback.comspf.mandrillapp.com_spf.tivian.comspfhost.messageprovider.com
Detected sending services
SendGrid, Microsoft 365, Mailchimp/Mandrill, Mailchimp Transactional
IPv4
727 addresses authorised directly

DMARC

v=DMARC1; p=reject; rua=mailto:gthwor3p38@rua.powerdmarc.com; ruf=mailto:gthwor3p38@ruf.powerdmarc.com; sp=reject; fo=0:1:d:s
Policy
p=reject
Subdomains (sp)
reject
Share (pct)
100 %
Alignment DKIM/SPF
relaxed / relaxed
Aggregate reports (rua)
gthwor3p38@rua.powerdmarc.com
Forensic reports (ruf)
gthwor3p38@ruf.powerdmarc.com
Report services
PowerDMARC

DKIM

SelectorKeydelegated to
s1 RSA 2048 s1.domainkey.u32625635.wl136.sendgrid.net
s2 RSA 2048 s2.domainkey.u32625635.wl136.sendgrid.net
selector1 RSA 2048 selector1-sonova-com._domainkey.sonova.onmicrosoft.com
selector2 RSA 2048 selector2-sonova-com._domainkey.sonova.onmicrosoft.com

Checked: 100 common selectors. Keys under custom selectors remain invisible.

Transport encryption

MTA-STS
missing
DANE
missing
DNSSEC
missing
TLS-RPT
missing
BIMI
missing

Verified services

From verification records in the domain TXT: services where the domain is verified.

GoogleAtlassian

History

  • Score 70 · DMARC reject

All changes of this organisation in the change log →

Raw data
sonova.com. IN MX 0 sonova-com.mail.protection.outlook.com.
sonova.com. IN TXT "v=spf1 include:sonova.net include:spf.3uu.de include:spf.qb-feedback.com ip4:155.56.221.13 ip4:155.56.221.14 ip4:5.102.145.30 ip4:92.42.235.0/24 ip6:2a06:c01:1:1102::30 ip4:5.102.151.229 ip6:2a06:c00::56fd ip4:80.178.161.0/25 ip4:80.179.142.0/28 ip4:80.179.230.0/24 ip4:212.199.163.192/26 ip4:168.245.30.203 ip4:185.53.204.135 ip4:185.53.204.136 include:spf.mandrillapp.com include:_spf.tivian.com include:spfhost.messageprovider.com -all"
_dmarc.sonova.com. IN TXT "v=DMARC1; p=reject; rua=mailto:gthwor3p38@rua.powerdmarc.com; ruf=mailto:gthwor3p38@ruf.powerdmarc.com; sp=reject; fo=0:1:d:s"

More from this industry

← Back to overview